Call 1-800-MEDICARE (1-800-633-4227)
TTY users call 1-877-486-2048
Visit Medicare.gov
Use the Medicare live chat on Medicare.gov
Write to Medicare at P.O. Box 1270, Lawrence, KS 66044
Contact your State Health Insurance Assistance Program (SHIP)
Contact your local Social Security office for Medicare-related help
Contact your Medicare Advantage or Part D plan directly if you are enrolled in one